Two cases of equine primary gastric impaction

The clinical details of two cases of equine primary gastric impaction are described and the syndromes of gastric impaction and dilatation are discussed. Both cases of gastric impaction were successfully treated by gastrotomy and evacuation of the gastric contents.     

Clinical course of renal adenocarcinoma associated with hypercupraemia in a horse

A four-year-old shire mare with haematuria, colic, terminal weight loss and an abdominal mass had a large unilateral renal adenocarcinoma. Clinical signs were monitored for 11 months. Increased serum copper concentrations were measured on two occasions. Hypercupraemia is discussed as a possible paraneoplastic change.     

Feline leukaemia (lymphosarcoma) symposium. 3. Some comparative aspects of leukaemia in man and animals with particular reference to lymphosarcoma

A review of recent advances made in the study of lymphosarcoma in man and animals has been made. Some aspects of leukaemia are also described.     

An XO/XX mosaic sheep with associated gonadal dysgenesis

A female sheep with an apparent XO/XX karyotype was discovered while screening barren ewes. The animal exhibited a normal phenotype. This is the first reported case of mosaicism associated with gonadal dysgenesis in the sheep.     

Complete diet feeding for cattleAlimentation des bovins avec des rations complètesFütterung mit Milchvieh-Komplettfutter

The complete diet system involves processing the ingredients of cattle diets into a well-mixed blend to which the cattle are given free access. Mixing the diet in this way has often been shown to increase daily intake and to increase the solids content of the milk of cows, although total milk production may not be increased.The necessity for varying forage:concentrate ratio with stage of production in cows is examined in relation to complete diets and for the feeding of separate ingredients. The evidence so far suggests that, where the basic forage is of good quality, there seems little justification for varying diet composition with the consequent necessity for grouping the cows.Specifications are outlined for computer formulation of complete diets showing the main aspects which require further clarification, notably roughage characteristics, protein degradability, amino acid composition of rumen undegradable protein and intake characteristics of mixed feeds.Advantages for complete diets appear to be simplicity of management and full mechanisation, coupled with economy of feeding space, safety and flexibility for inclusion of a wide range of ingredients. Disadvantages, as with most mechanisation, include high capital cost and risks of mechanical breakdown.Future developments envisaged include the use of low forage, straw-based diets for arid areas where the provision of conventional forage is costly.